Custom Spring Manufacturer



For over 75 years, Colonial Spring of Bristol, CT and Hardware Products of Chelsea, MA have been providing their customers with the highest quality products in the aerospace, defense, general industrial, medical, and automotive end markets.

In 2023, Hardware Products agreed to relocate its operations to Bristol and merge with its sister division, Colonial Spring, to form New England Spring.

This move allows us at New England Spring to better serve our customers through a single larger state-of-the-art facility, more efficient processes, and additional capabilities. Further, the New England Spring location currently holds both ISO 9001 and AS 9100 quality system certifications. Importantly, these certifications have not been available to customers of Hardware Products in the past and should provide them with numerous additional opportunities.

We are excited for the possibilities of our two divisions existing under one roof and look forward to serving our customers in many new ways going forward.


Colonial Spring was founded in 1946 in Hartford, CT, expanded to a larger facility in Bloomfield, CT in 1958, and finally again in 1977 to our current location in Bristol, CT.

In 1999 Colonial Spring acquired HanDee Spring Co. which increased the size of the Company and initiated its entrance to aerospace markets. In 2003, Colonial/HanDee Spring became registered to ISO 9001:2008 and AS-9100B a year later.

In 2004, Colonial/Handee Spring merged with Triple A Spring, which specialized in strip and wire components processed on fourslide equipment, and changed the combined entity name to the simpler Colonial Spring Company. Triple A Spring was owned by SEI MetalTek at the time, and this merger expanded the existing customer base and brought professional management to the combined operations. In 2006, SEI MetalTek acquired the remaining outstanding interests in the combined Colonial Spring entity and became the 100% owner of the Company.


Hardware Products was founded in 1866 in the historic North End of Boston, MA, a stone’s throw away from Paul Revere’s house, as a manufacturer of machined hardware items.

In 1971, the Goodnow family ownership decided to sell the Company to George Underwood who was in the heat-treat business, which is closely related to spring manufacturing.

In the early 1990s, Hardware Products moved to its most recent facility in Chelsea, MA, and in 1991 Catalyst Group acquired the Company. Subsequently in 1993, after two years of ownership under Catalyst Group, SEI MetalTek acquired Hardware Products and added it to its family of manufacturing companies.

New England Spring

  • New England Spring

    95 Valley Street

    Bristol, CT 06011


    phone: (860) 589-3231